Coating

ABSTRACT

A coating including one or more nano-materials and an organic material, the one or more nano-materials being present in a concentration of up to about 30% by weight, based on the total weight of the coating. A razor including one or more blades and a coating disposed on at least one of the one or more blades. The coating on the one or more blades of the razor including one or more nano-materials and an organic material, the one or more nano-materials being present in a concentration of up to about 30% by weight, based on the total weight of the coating.

BACKGROUND TO RELATED APPLICATION

This application is a divisional of U.S. Ser. No. 15/450,506, filed Mar.6, 2017, which is hereby incorporated by reference in its entirety.

The following description relates to coatings applied to the blade of ashaving razor. The coating includes an organic material reinforced byone or more nano-materials.

DESCRIPTION OF RELATED ART

Conventional coatings applied to the blade of shaving razors includepolytetrafluoroethylene (PTFE) as a lubricating component. Thedispersions having PTFE can be applied and sintered onto shaving blades.The coating, provides lubrication and reduces the friction between theblade and the hair and skin from that of an uncoated blade surface.However, the present PTFE coatings still produce more friction betweenthe blade, hair, and skin than desired. Further, several disadvantagesare typically encountered including insufficient lubrication of razorblades, leading to poor shaving performance.

SUMMARY

The present description provides a nanocomposite coating, comprisingnano-materials and organic solids, that overcomes the aforementioneddisadvantages of conventional shaving blade coatings. The nanocompositecoating generally includes a nano-material mixture; the nano-materialmixture as described herein may be a dispersion of one or morenano-materials throughout a suitable medium in order to create adispersion that may be used to form a lubricating coating on a desiredsurface. The one or more nano-materials may be, but are not limited to,carbon-based nano-materials (including, but not limited to, graphenenano-platelets, graphite nano-platelets, oxidized graphenenano-platelets, oxidized graphite nano-platelets, large area graphenesheets, and carbon nanotubes (CNTs)), thick and thin two-dimensionalmaterials (including, but not limited to, graphene, boron nitride (BN),tungsten (IV) sulfide (WS₂), and molybdenum disulfide (MoS₂)), van derWaals heterostructures (such as layer-by-layer stacks of two-dimensionalmaterials), suitable hybrid compounds (such as a mixture of suitablecombinations of carbon-based nano-materials and other two-dimensionalmaterials), and any other suitable nano-material. The surface on whichthe final solution/mixture is applied may be, but is not limited to, ablade edge (such as a stainless steel strip having at least one cuttingedge and a hard coating). A solution/mixture made in accordance with thedisclosure herein may also include an organic material, such aspolyfluorocarbon (including, but not limited to, PTFE nanoparticles).The solution/mixture may be prepared, diluted, applied, and sinteredonto the desired surface. The nanocomposite coating may act, but is notbound, as a lubricating (or soft) coating for a blade.

An aspect of the present disclosure may be achieved by providing ananocompositie coating having one or more nano-materials and an organicmaterial. The one or more nano-materials may be selected from the groupconsisting of carbon-based nano-materials, two-dimensional materials,van der Waals heterostructures, hybrid compounds, and combinationsthereof. The carbon-based nano-materials may be selected from the groupconsisting of graphene nano-platelets, graphite nano-platelets, oxidizedgraphene nano-platelets, oxidized graphite nano-platelets, large areagraphene sheets, carbon nanotubes (CNTs) and combinations thereof. Thetwo-dimensional materials may be selected from the group consisting ofgraphene, boron nitride (BN), tungsten (IV) sulfide (WS₂), andmolybdenum disulfide (MoS₂). The organic material may be apolyfluorocarbon. The polyfluorocarbon may be polytetrafluoroethylene(PTFE). The one or more nano-materials may be present in a concentrationof up to about 30% by weight, based on a total weight of thenanocomposite coating.

Another aspect of the present disclosure may be achieved by providing arazor having one or more blades and a coating disposed on at least oneof the one or more blades. The coating may include one or morenano-materials selected from the group consisting of carbon-basednano-materials, two-dimensional materials, van der Waals heterostructures, hybrid compounds, and combinations thereof; and an organicmaterial. The one or more nano-materials may be present in aconcentration of up to about 30% by weight, based on the total weight ofthe coating. The blade may be a strip of stainless steel, having atleast one cutting edge.

In yet another aspect, the present disclosure may be achieved byproviding a method for coating a surface including mixing one or morenano-materials and a suitable medium with an organic material to achievea dispersion, diluting the dispersion with a suitable diluent,depositing the diluted solution onto a surface, and sintering thesurface after the diluted solution is disposed onto the surface. Thedispersion may have a nano-material concentration from about 0% to about10% by weight and an organic material concentration of about 20% byweight, based on the total weight of the dispersion. The dilutedsolution may have a nano-material concentration of about 0% to about0.6% by weight and an organic material concentration of less than about2% by weight, based on the total weight of the diluted solution. Thesurface may be a blade, having a hard coating.

The foregoing is intended to be illustrative and is not meant in alimiting sense. Many features of the embodiments may be employed with orwithout reference to other features of any of the embodiments.Additional aspects, advantages, and/or utilities of the presentinventive concept will be set forth, in part, in the description thatfollows and, in part, will be apparent from the description, or may belearned by practice of the present inventive concept.

BRIEF DESCRIPTION OF THE DRAWINGS

The foregoing summary, as well as the following detailed description,will be better understood when read in conjunction with the appendeddrawings. For the purpose of illustration, there are shown in thedrawings certain embodiments of the present disclosure. It should beunderstood, however, that the present inventive concept is not limitedto the precise embodiments and features shown. The accompanyingdrawings, which are incorporated in and constitute a part of thisspecification, illustrate an implementation of compositions consistentwith the present inventive concept and, together with the description,serve to explain advantages and principles consistent with the presentinventive concept.

FIG. 1 is a graph illustrating a comparison of cutting forceperformance.

FIG. 2 is a graph illustrating a comparison of friction force.

DETAILED DESCRIPTION

It is to be understood that the present disclosure is not limited in itsapplication to the details of construction and to the embodiments of thecomponents set forth in the following description or illustrated in thedrawings. The figures and written description are provided to teach anyperson skilled in the art to make and use the inventions for whichpatent protection is sought. The present inventive concept is capable ofother embodiments and of being practiced and carried out in variousways. Persons of skill in the art will appreciate that the developmentof an actual commercial embodiment incorporating aspects of the presentinventive concept will require numerous implementations—specificdecisions to achieve the ultimate goal of the developer for thecommercial embodiment. While these efforts may be complex andtime-consuming, these efforts, nevertheless, would be a routineundertaking for those of skill in the art of having the benefit of thisdisclosure.

I. TERMINOLOGY

The phraseology and terminology employed herein are for the purpose ofdescription and should not be regarded as limiting. For example, the useof a singular term, such as, “a” is not intended as limiting of thenumber of items. Further, it should be understood that any one of thefeatures of the present inventive concept may be used separately or incombination with other features. Other systems, methods, features, andadvantages of the present inventive concept will be, or become, apparentto one having skill in the art upon examination of the figures and thedetailed description. It is intended that all such additional systems,methods, features, and advantages be included within this description,be within the scope of the present inventive concept, and be protectedby the accompanying claims.

Further, any term of degree such as, but not limited to, “about” or“approximately,” as used in the description and the appended claims,should be understood to include the recited values or a value that isthree times greater or one third of the recited values. For example,about 3 mm includes all values from 1 mm to 9 mm, and approximately 50degrees includes all values from 16.6 degrees to 150 degrees.

The term “graphene nano-platelets” as used herein is defined asincluding both single layer and multi-layer (such as, few layer) planarsheets interacting by van der Waals forces with an average thickness ofup to about 10 nm and a lateral size of up to about 100 μm. The term“graphite nano-platelets” as used herein is defined as includingcrystals with a thickness of greater than about 10 nm. As used herein,the phrase “large area graphene sheets” is defined as the material grownon thin metallic substrates under a chemical vapor deposition process;providing a surface area of greater than about 5 cm². Additionally, theterms “oxidized graphene” and “oxidized graphite” refer to “grapheneoxide nano-platelets” and “graphite oxide nano-platelets”, respectively.

The term “carbon nanotubes” (CNTs) as used herein is defined asone-dimensional cylindrical nano-structures consisting of either singlewalled graphene tubes having a diameter of less than about 2 nm, ormultiple concentric graphene tubes (also referred to herein as“multi-walled”) having diameters of about 100 nm. The length of both thesingle and multi-walled CNTs may be less than about 100 μm.

The term “thin 2-D materials” as used herein is defined as includingboth single layer and multi-layered (such as, few layered) planar sheetsinteracting by van der Waals forces, wherein the sheets have an averagethickness of up to about 10 nm and a lateral size of up to about 5 μm.Correspondingly, crystals having a thickness of greater than about 10 nmare referred to herein as “thick 2-D materials”. The term “van der Waalsheterostructures” as used herein is defined as the layer-by-layerstacking of different 2-D materials.

The term “hybrid compounds” as used herein is defined as materials madeby mixing suitable combinations of graphene nano-platelets, graphitenano-platelets, and CNTs with other 2-D materials.

The term “organic material” as used herein may include a lubricatingmaterial, such as a hydrophobic or hydrophilic lubricating material.

The term “suitable medium” as used herein may include, but is notlimited to, a pure organic solvent, a pure inorganic solvent, a surfaceactive agent or any combination thereof.

The term “nanocomposite coating” as used herein refers to a sinteredcoating comprising a combination of at least one nano-material and anorganic material.

The term “nano-material” as used herein may refer to carbon basednano-materials, thin two-dimensional materials, thick two-dimensionalmaterials, van der Waals heterostructures, and hybrid compounds.

The term “carbon based nano-material” as used herein may refer to, butis not limited to, graphene nano-platelets, graphite nano-platelets,large area graphene sheets, graphene oxide nano-platelets, graphiteoxide nano-platelets, carbon nanotubes (CNTs). Further, as the presentinventive concept is susceptible to embodiments of many different forms,it is intended that the present disclosure be considered as an exampleof the principles of the present inventive concept and not intended tolimit the present inventive concept to the specific embodiments shownand described. Any one of the features of the present inventive conceptmay be used separately or in combination with any other feature.References to the terms “embodiment,” “embodiments,” and/or the like inthe description mean that the feature and/or features being referred toare included in, at least, one aspect of the description. Separatereferences to the terms “embodiment,” “embodiments,” and/or the like inthe description do not necessarily refer to the same embodiment and arealso not mutually exclusive unless so stated and/or except as will bereadily apparent to those skilled in the art from the description. Forexample, a feature, structure, process, step, action, or the likedescribed in one embodiment may also be included in other embodiments,but is not necessarily included. Thus, the present inventive concept mayinclude a variety of combinations and/or integrations of the embodimentsdescribed herein. Additionally, all aspects of the present disclosure,as described herein, are not essential for its practice. Likewise, othersystems, methods, features, and advantages of the present inventiveconcept will be, or become, apparent to one having skill in the art uponexamination of the figures and the description. It is intended that allsuch additional systems, methods, features, and advantages be includedwithin this description, be within the scope of the present inventiveconcept, and be encompassed by the claims.

Lastly, the terms “or” and “and/or,” as used herein, are to beinterpreted as inclusive or meaning any one or any combination.Therefore, “A, B or C” or “A, B and/or C” mean any of the following:“A,” “B,” “C”; “A and B”; “A and C”; “B and C”; “A, B and C.” Anexception to this definition will occur only when a combination ofelements, functions, steps or acts are in some way inherently mutuallyexclusive.

II. NANO-MATERIAL MIXTURE

The nano-material mixture as described herein may be a dispersion of oneor more nano-materials throughout a suitable medium. The one or morenano-materials may be, but are not limited to, carbon-basednano-materials (including, but not limited to, graphene nano-platelets,graphite nano-platelets, oxidized graphene nano-platelets, oxidizedgraphite nano-platelets, large area graphene sheets, and carbonnanotubes (CNTs)), thick and thin two-dimensional materials (including,but not limited to, graphene, boron nitride (BN), tungsten (IV) sulfide(WS₂), and molybdenum disulfide (MoS₂)), suitable hybrid compounds(including, but not limited to, materials made by mixing suitablecombinations of graphene/graphite nano-platelets, CNTs with other 2-Dmaterials), and van der Waals heterostructures (including, but notlimited to, layer-by-layer stacks of different 2-D materials, such asgraphene with boron nitride (BN), tungsten (IV) sulfide (WS₂),molybdenum disulfide (MoS₂)), and other suitable nano-materials. Whilethe nano-materials generally described herein are referred to aspowders, it would be understood by those having skill in the art thatthe previously described materials may be included in powder form ordispersed within a suitable medium (including, but not limited to,water, an ethanol and water mixture, or any other suitable organicsolvents). Graphene nano-platelets and graphite nano-platelets powderscompatible for use in the present nanocomposite coating may includethose which are commercially available in a variety of sizes andthicknesses. For example, the graphene nano-platelets compatible for usewith the coatings described herein may have a lateral size of from about0.25 μm to about 100 μm and a thickness of from about 0.34 nm (such as asingle layer) up to about 10 nm (such as multi-layered nano-platelets).Additionally, the graphite nano-platelets compatible for use with thecoatings described herein may have a nano-platelet lateral size of fromabout 0.25 μm to about 100 μm and a nano-platelet thickness of less thanabout 10 nm. The nano-materials may be dispersed throughout a suitablemedium. In at least one example, the suitable medium may be water, suchas deionized water. The concentration of the nano-material/aqueousmixture may be from about 0 grams per milliliter (gr/mL) to about 5gr/mL by weight nano-material, based on a total weight of thenano-material/aqueous mixture.

A second mixture may be added to the above describednano-material/aqueous mixture. The second mixture (also referred toherein as an “organic material dispersion”) may be a dispersion of anorganic material throughout a suitable medium. In at least oneembodiment, the organic material may be a polyfluorocarbon, including,but not limited to, polytetrafluoroethylene (PTFE) is dispersed withinde-ionized H₂O and surfactant, having a PTFE solids concentration ofabout 20% by weight, based on the total weight of the second mixture(also referred to herein as a “PTFE dispersion”). Suitable PTFEdispersions are commercially available from companies, including, butnot limited to, the Chemours Company (such as the LW2120 dispersion).

In at least one embodiment, to create the initial organicmaterial/nano-material mixture, the nano-material/aqueous mixture isadded to the organic material dispersion using methods including, butnot limited to, magnetic stirring and tip sonication techniques. Theresulting organic material/nano-material mixture (also referred toherein as the “initial mixture”) may be created in a wide variety ofconcentrations including, but not limited to, from about 0% to about 10%gr/mL nano-material and about 20% by weight organic material, based onthe total weight of the initial organic material/nano-material mixture.The dispersion may be loaded into a roll mixer, or other suitable mixingdevice, to obtain a dispersion of the nano-materials throughout theaqueous-based organic material mixture. A second mixing step may help toprevent the agglomeration of nano-materials within the dispersion. Oncea suitable dispersion is achieved, the initial mixture may be dilutedusing de-ionized water, or any other suitable diluent, to achieve thedesired concentration for the final organic material/nano-materialmixture. For example, the final concentration of the diluted dispersionmay be, but is not limited to, from about 0.0% to about 0.6% by weightnano-materials and less than about 2% by weight organic material, basedon the total weight of the final organic material/nano-material mixture.

In an alternative example, the initial organic material/nano-materialmixture may be more structured. For example, the nano-material may be,but is not limited to, sheets of aligned graphene, providing areinforcement material for the final coating. The nano-composite coatingmay then include stacks, or layers, of the aligned graphene sheets andorganic matrix material.

In another alternative example, the nano-composite coating may include acombination of the unstructured and structured examples described above.

III. APPLICATION OF THE FINAL ORGANIC/NANO-MATERIAL MIXTURE

The diluted dispersion may be applied to any desired surface using oneof many different methods including, but not limited to, spraying,dipping, lamination, and any other suitable coating technique. Thedesired surface may include, but is not limited to, a plurality of razorblades, and individual stainless steel strips having a cutting edge. Forexample, spraying of the final mixture may be completed by, but notlimited to, airless, air-assisted, air spray, or various other sprayingmethods.

For example, the final mixture may be disposed on the desired surfaceusing a coating system. The coating system may include a tank, holdingthe final organic material/nano-material mixture, and a stirrer, to keepthe mixture under constant motion to maintain a homogenous dispersion.The tank may be connected to an air supply and a pump via a pipe, tocreate pressurization within the tank and allow for a pressurized flowof the mixture out of a spray gun in fluidic communication with thetank. The spray gun may be, but is not limited to, a low pressure spraygun, and may use air pressure and fluid pressure to achieve the desiredatomization of the final mixture. The spray gun may be configured toproduce a mist of fine particles of the final mixture to be disposed onthe desired surface; the size and reparation of the particles may beadjusted by using different air-caps on the end of the spray gun. Forexample, the coating may be applied to a surface in accordance withmethods as described in WO 2011047727, included herein by reference inits entirety.

After the coating has been applied to a substrate, or desired surface,the coating may be sintered. Sintering may be completed through the useof, but is not limited to, resistance, ultraviolet (UV) light, infrared(IR) light, flash lamps, and any other suitable sintering processes. Thesintering process may be completed, for example, by heating the coatedsurface at a temperature of 360° C. until the organic material ismelted, leaving only the desired nanocomposite coating, comprising onlythe nano-materials and the organic material solids, disposed on thesurface. The nanocomposite coating may have a nano-materialconcentration of from about 0% to about 30% by weight, based on a totalweight of the nanocomposite coating.

IV. ANALYSIS OF THE COATING

The sintered nanocomposite coating may be analyzed using a variety ofdifferent methods to determine specific characteristics of the coating.For example, morphological characteristics may be evaluated usingoptical microscopy (OM) and scanning electron microscopy (SEM).Additionally, the frictional characteristics of the sintered coating maybe evaluated using a friction test. The friction test may measureresistance to dragging, the force developed when a coated surface isdragged over a specified material (such as a specific type of paper fora predetermined distance). In the alternative, frictionalcharacteristics may be measured using a dry and/or wet felt test. Forexample, when the coating is applied to a blade edge, the test mayinclude a determination of the cutting force developed on the bladeduring a series of continuous cuts on a moving dry or wet felt. Finally,a Thermogravimetric analysis (TGA) was used, Q50 TA Insts®, in order toquantify the concentration of the nano-material into the nanocompositecoating.

An in-depth analysis of coating may also be performed using DifferentialScanning Calorimetry (DSC), Raman microscopy, and Atomic Forcemicroscopy (AFM). Several examples of the sintered nanocomposite coatingwere analyzed based on the above methods. For example, DifferentialScanning Calorimetry thermograms were obtained using DifferentialScanning Calorimetry on a Q100 TA Insts® to identify variations in themelting and crystallization behavior of organic material in the presenceof nano-material. Raman microscopy was performed using a Renishaw® Invia2000 at 785 nm to identify the quality of the nano-material used, theorganic material/nano-material interactions, and, where possible, wereused to define the thickness of the nano-material inclusions.Additionally, Raman microscopy was used to detect possible structurechanges on organic materials after the incorporation of thenano-material. Finally, Atomic Force microscopy performed on a Bruker®FastScan was used to perform topographic analysis of the coating afterdeposition on the blades.

V. EXAMPLES

The following examples are provided to illustrate the subject matter ofthe present disclosure. The examples are not intended to limit the scopeof the present disclosure and should not be so interpreted.

Example 1

3.5 grams of graphene nano-platelets powder, having a graphenenano-platelet diameter of about 5 μm and a thickness of about 10 layers,are dispersed in a suitable medium (in this example de-ionized H₂O wasused). The graphene nano-platelets dispersion was then mixed with 350 mLof a LW2120 dispersion; the LW2120 dispersion having a PTFE solidsconcentration of 20% by weight, based on the total weight of thedispersion. Then, the mixture was stirred for five minutes usingmagnetic stirring and an additional five minutes using tip sonication.The mixture was then loaded into a roll mixer and stirred for tenminutes to prevent agglomeration of the nano-platelets. The initialPTFE/graphene nano-platelets mixture had a concentration of about 1%gram/mL of graphene nano-platelets and about 20% by weight PTFE, basedon a total weight of the initial PTFE/graphene nano-platelets mixture.The initial mixture was then diluted to a lower concentration usingde-ionized water. The concentration of the diluted mixture wasdetermined to be about 0.06% by weight graphene nano-platelets and about1.2% by weight PTFE, based on a total weight of the final PTFE/graphenenano-platelets mixture.

The final PTFE/graphene nano-platelets dispersion was then sprayed ontoa razor blade surface using a commercially available production spraysystem. For the purposes of this example, the razor blade was anindividual strip of stainless steel having a cutting edge with aspecific grinding profile, wherein the blade is covered in a hardcoating material. The spray system includes, as described above, apressurized tank having a stirrer in order to maintain homogenousdispersion of the particles throughout the final mixture. The tank is influidic communication with a spray gun having a nozzle that allows for apressurized mist of the final mixture to be disposed on the blade to adesired thickness. The coated blade was then sintered in a resistanceheating oven by heating the blades at 360° C. to melt the PTFEnano-particles and leave the desired nanocomposite coating on theblades. Once sintered, the coated blades were left with a 4.76% byweight graphene nano-platelets, based on the total weight of thegraphene nano-platelets/PTFE nanocomposite coating.

Example 2

0.875 grams of graphene nano-platelets powder, having a nano-plateletlateral size of up to about 3 μm and a thickness of up to about 14layers, dispersed within a suitable medium. The graphene nano-plateletsdispersion was then mixed with 350 mL of a LW2120 dispersion; the LW2120dispersion having a PTFE solids concentration of 20% by weight, based ontotal weight of the dispersion. Then, the mixture was stirred for fiveminutes using magnetic stirring and an additional five minutes using tipsonication. The mixture was then loaded into a roll mixer and stirredfor ten minutes to prevent agglomeration of the nano-platelets. Theinitial PTFE/graphene nano-platelets mixture had a concentration ofabout 0.25% gram/mL of graphene nano-platelets and about 20% by weightPTFE, based on a total weight of the initial mixture. Next, the initialmixture was diluted to a lower concentration using de-ionized water. Theconcentration of the final PTFE/graphene nano-platelets mixture wasabout 0.015% gram/mL graphene nano-platelets and about 1.2% by weightPTFE, based on a total weight of the final mixture.

The final PTFE/graphene nano-platelets mixture was then sprayed onto arazor blade surface using a commercially available production spraysystem. For the purposes of this example, the razor blade was anindividual strip of stainless steel having a cutting edge with aspecific grinding profile, wherein the blade is covered in a hardcoating material. The spray system includes, as described above, apressurized tank having a stirrer in order to maintain homogenousdispersion of the particles throughout the final mixture. The tank is influidic communication with a spray gun having a nozzle that allows for apressurized mist of the final mixture to be disposed on the blade to adesired thickness. The coated blade was then sintered in a resistanceheating oven by heating the coated blade to 360° C. to melt the PTFEnano-particles and leave the blade coated with the desirednanocomposite. Once sintered, the coated blades are left with a 1.23% byweight graphene nano-platelets, based on the total weight of thegraphene nano-platelets/PTFE nanocomposite coating.

While the above Examples generally include carbon-based graphenenano-platelets in powder form, it would be obvious to those having skillin the art that similar coatings could be made using othernano-materials as discussed above, including, but not limited to,graphite nano-platelets, oxidized graphene nano-platelets, oxidizedgraphite nano-platelets, large area graphene sheets, CNTs, thick andthin two-dimensional materials (including, but not limited to, graphene,boron nitride (BN), tungsten (IV) sulfide (WS₂), and molybdenumdisulfide (MoS₂)), suitable hybrid compounds (materials made by mixingsuitable combinations of graphene/graphite nano-platelets, CNTs withother 2-D materials), as well as van der Waals heterostructures(including layer-by-layer stacks of different 2-D materials, such asgraphene with boron nitride (BN), tungsten (IV) sulfide (WS₂), andmolybdenum disulfide (MoS₂)), hybrid compounds, and other suitablenano-materials.

VI. EVALUATION

Testing as described above was performed on three samples, a PTFE onlycoating, the graphene nano-platelets/PTFE nanocomposite coating asdescribed in Example 1, and the graphene nano-platelets/PTFEnanocomposite coating as described in Example 2.

FIG. 1 illustrates the cutting force performance of each of the threedifferent samples. The value of the first cut loads of Examples 1 and 2is measured to be about 4-5% lower than the blade produced using thestandard PTFE coating. Additionally, the tenth cut loads delivered bythe blades coated with the Example 1 and 2 coatings were about 15-17%lower than the corresponding load values of the standard PTFE coatedblade. Specifically, the values of cut force for the first and tenth cutare shown in Table 1, below.

TABLE 1 Sample Force at 1^(st) Cut (Kgf) Force at 10^(th) Cut (Kgf)Standard PTFE Coating 1.291 2.194 Example 1 Coating 1.226 1.858 Example2 Coating 1.241 1.811

FIG. 2 illustrates the results of the friction force performance tests.As shown, the coatings as prepared by Examples 1 and 2 provide about a5-7% decrease of the MAX load developed during the friction test singlestroke measurement compared to the standard PTFE coated blade.Specifically, the MAX value of friction force for each coated blade isshown in Table 2, below.

TABLE 2 Sample MAX Value of Friction Force × 10⁻³ (Kgf) Standard PTFECoating 10.9 Example 1 Coating 10.4 Example 2 Coating 10.1

Additional SEM analysis of the blades treated with the coating producedin Examples 1 and 2 showed gradual exfoliation of graphenenano-platelets in the form of layers and preservation of the structuralintegrity of the layers into the PTFE matrix. The coatings produced inaccordance with the present disclosure showed superior lubrication andsuperior shaving performance in comparison with the standard PTFE coatedblade.

While the embodiments have been described in detail in the foregoingdescription, the same is to be considered as illustrative and notrestrictive in character, it being understood that only some embodimentshave been shown and described and that all changes and modificationsthat come within the spirit of the embodiments are desired to beprotected. While said particular embodiments of the present disclosurehave been described, it would be obvious to those skilled in the artthat various other changes and modifications may be made withoutdeparting from the spirit and scope of the disclosure. It is thereforeintended to cover in the appended claims all such changes andmodifications are within the scope of the disclosure.

What is claimed is:
 1. A nanocomposite coating material comprising: anano-material solution comprising one or more nano-materials dispersedwithin a first aqueous medium wherein the one or more nano-materials arepresent in an amount of greater than zero (0) grams of nano-material permilliliter of the first aqueous medium to about five (5) grams ofnano-material per milliliter of the first aqueous medium; an organicmaterial dispersion including an organic material dispersed within asecond aqueous medium wherein the organic material is present in aconcentration of about twenty percent (20%) by weight of the organicmaterial dispersion; and a diluent wherein nanocomposite coatingmaterial has a concentration of from about 0% to about 0.6%nano-materials and less than about 2% organic material by weight basedon the total weight of the nanocomposite coating material.
 2. Thenanocomposite coating material of claim 1, wherein the one or morenano-materials are selected from the group consisting of carbon-basednano-materials, two-dimensional materials, van der Waalsheterostructures, hybrid compounds, and combinations thereof.
 3. Thenanocomposite containing material of claim 2, wherein the carbon-basednano-materials are selected from the group consisting of graphenenano-platelets, graphite nano-platelets, oxidized graphenenano-platelets, oxidized graphite nano-platelets, large area graphenesheets, carbon nanotubes (CNTs), and combinations thereof.
 4. The nanocomposite coating material of claim 2, wherein the two-dimensionalmaterials are selected from the group consisting of graphene, boronnitride (BN), tungsten (IV) sulfide (WS₂), and molybdenum disulfide(MoS₂).
 5. The nanocomposite coating material of claim 1, wherein theorganic material is a polyfluorocarbon.
 6. The nanocomposite coatingmaterial of claim 5, wherein the polyfluorocarbon ispolytetrafluoroethylene (PTFE).
 7. The nanocomposite coating material ofclaim 1, wherein the first aqueous medium and the second aqueous mediumare the same.